COLLABORATIVE SPECTRUM SENSING IN COGNITIVE RADIO NETWORK

摘要

Method and system for collaborative spectrum sensing in cognitive radio network are provided. The method includes: a first vehicle receiving through a cognitive radio network sensing messages one after another; when receiving a first new sensing message comprising a first piece of position information, calculating a first distance based on first position information of the first vehicle and the first piece of position information; if the first distance is greater than a predetermined value, calculating a first count-down time; if no new sensing message is received by the first vehicle before the first count-down time ends, broadcasting a new sensing message; if a second new sensing message comprising a second piece of position information is received before end of the first count-down time, calculating a second distance; and if the second distance is greater than the predetermined value, calculating a second count-down time. Efficiency of collaborative spectrum sensing is improved.